MersV1, Main, Exploration, bibRecord, 002439

Random sequential adsorption of partially oriented linear k-mers on a square lattice.

Identifieur interne : 002439 ( Main/Exploration ); précédent : 002438; suivant : 002440

Random sequential adsorption of partially oriented linear k-mers on a square lattice.

Auteurs : Nikolai I. Lebovka [Ukraine] ; Natalia N. Karmazina ; Yuri Yu Tarasevich ; Valeri V. Laptev

Source :

Physical review. E, Statistical, nonlinear, and soft matter physics [ 1550-2376 ] ; 2011.

RBID : pubmed:22304098

Descripteurs français

KwdFr :
- Adsorption, Anisotropie, Conformation moléculaire, Modèles moléculaires, Probabilité.
MESH :
- Adsorption, Anisotropie, Conformation moléculaire, Modèles moléculaires, Probabilité.

English descriptors

KwdEn :
- Adsorption, Anisotropy, Models, Molecular, Molecular Conformation, Probability.
MESH :
- Adsorption, Anisotropy, Models, Molecular, Molecular Conformation, Probability.

Abstract

Jamming phenomena on a square lattice are investigated for two different models of anisotropic random sequential adsorption (RSA) of linear k-mers (particles occupying k adjacent adsorption sites along a line). The length of a k-mer varies from 2 to 256. The effect of k-mer alignment on the jamming threshold is examined. For completely ordered systems where all the k-mers are aligned along one direction (e.g., vertical), the obtained simulation data are very close to the known analytical results for one-dimensional systems. In particular, the jamming threshold tends to the Rényi's parking constant for large k. In the other extreme case, when k-mers are fully disordered, our results correspond to the published results for short k-mers. It was observed that for partially oriented systems the jamming configurations consist of the blocks of vertically and horizontally oriented k-mers (v and h blocks, respectively) and large voids between them. The relative areas of different blocks and voids depend on the order parameter s, k-mer length, and type of the model. For small k-mers (k⩽4), denser configurations are observed in disordered systems as compared to those of completely ordered systems. However, longer k-mers exhibit the opposite behavior.

DOI: 10.1103/PhysRevE.84.061603
PubMed: 22304098

Affiliations:

Ukraine

Le document en format XML

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<front><div type="abstract" xml:lang="en">Jamming phenomena on a square lattice are investigated for two different models of anisotropic random sequential adsorption (RSA) of linear k-mers (particles occupying k adjacent adsorption sites along a line). The length of a k-mer varies from 2 to 256. The effect of k-mer alignment on the jamming threshold is examined. For completely ordered systems where all the k-mers are aligned along one direction (e.g., vertical), the obtained simulation data are very close to the known analytical results for one-dimensional systems. In particular, the jamming threshold tends to the Rényi's parking constant for large k. In the other extreme case, when k-mers are fully disordered, our results correspond to the published results for short k-mers. It was observed that for partially oriented systems the jamming configurations consist of the blocks of vertically and horizontally oriented k-mers (v and h blocks, respectively) and large voids between them. The relative areas of different blocks and voids depend on the order parameter s, k-mer length, and type of the model. For small k-mers (k⩽4), denser configurations are observed in disordered systems as compared to those of completely ordered systems. However, longer k-mers exhibit the opposite behavior.</div>
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Random sequential adsorption of partially oriented linear k-mers on a square lattice.

Random sequential adsorption of partially oriented linear k-mers on a square lattice.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

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